期刊
EUROPEAN PHYSICAL JOURNAL A
卷 48, 期 11, 页码 -出版社
SPRINGER
DOI: 10.1140/epja/i2012-12151-1
关键词
-
资金
- DFG
- NSFC [CRC 110]
- EU I3HP
- BMBF [06BN7008]
We analyze the recent electron-proton scattering data from Mainz using a dispersive framework that respects the constraints from analyticity and unitarity on the nucleon structure. We also perform a continued fraction analysis of these data. We find a small electric proton charge radius, r(E)(p) = 0.84(-0.01)(+0.01) fm, consistent with the recent determination from muonic hydrogen measurements and earlier dispersive analyses. We also extract the proton magnetic radius, r(M)(p) = 0.86(-0.03)(+0.02) fm, consistent with earlier determinations based on dispersion relations.
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